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From "Sergey Shelukhin (JIRA)" <>
Subject [jira] [Updated] (HIVE-9331) get rid of pre-optimized-hashtable memory optimizations
Date Fri, 09 Jan 2015 20:18:34 GMT


Sergey Shelukhin updated HIVE-9331:
    Attachment: HIVE-9331.patch

mostly removing code, there was also a small bug in one of the classes. 

Path for now has optimized hashtable itself disabled, so that tests could run on modified
code; PLEASE DO NOT COMMIT this patch even if tests pass and there's +1

> get rid of pre-optimized-hashtable memory optimizations
> -------------------------------------------------------
>                 Key: HIVE-9331
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.15.0
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>             Fix For: 0.15.0
>         Attachments: HIVE-9331.patch
> These were added in 13 because optimized hashtable couldn't make it in; they reduced
memory usage by some amount (10-25%), and informed the design of the optimized hashtable,
but now extra settings and code branches are just confusing and may have their own bugs. Might
as well remove them.

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